2019 12 Hours of Sebring

The FIA World Endurance Championship returned to the venue for the same weekend for the first time since 2012, albeit with a few changes. The World Endurance Championship had a 1,000-mile standalone event of its own on Friday, March 15th, 2019, the day before the official 12 Hours of Sebring sanctioned by IMSA, on March 16th.[1][2] Despite initial questions raised over whether or not two separate events of the same length could be held on the same weekend, the event was confirmed to be the sixth round of the 2018-19 FIA World Endurance Championship. Select drivers and teams, such as Corvette Racing and Chip Ganassi Racing, competed in both events back-to-back.[3]

On 28 February 2019, IMSA released a technical bulletin regarding the Balance of Performance for the 12-hour race. In the Daytona Prototype international (DPi) class, most cars had reductions in power, with the exception of the Cadillac DPi. The Mazda RT24-P was made 10 kilograms heavier, and had fuel capacity reduction. In the GT Le Mans class (GTLM), the Ferrari 488 GTE was made 15 kilograms lighter.[4] Despite being given a break, Ferrari GTLM team Risi Competizione decided to forgo Sebring, for concerns over the adjustment.[5]

On March 6th, 2019, the official entry list for the 12 Hours was revealed, featuring 38 cars in total. There were 11 cars in the DPi class, eight entries in GT Le Mans, 17 in GT Daytona, and a mere two entrants in the LMP2 class. Following the retirement of Christian Fittipaldi, Le Mans winner Brendon Hartley joined the Action Express Racing team in the #5 car. Matthieu Vaxivière joined Wayne Taylor Racing in their #10 Cadillac, after Toyota Gazoo Racing drivers Kamui Kobayashi and Fernando Alonso were barred from taking part in IMSA's event. In the GT Daytona class, Black Swan Racing, who had confirmed a full endurance-event program for the 2019 IMSA Season, had withdrawn as a result of team owner and driver Tim Pappas sustaining injuries from February's Bathurst 12 Hour event.[6]